ClientToScreen(&CPoint);

[purusingh]

IN VC++
ClientToScreen(&CPoint);
ClientToScreen(&CRect);
but
in bc++
ClientToScreen(&CPoint);
is it true?

while using
ClientToScreen(&CPoint);
it goes out of window.How to use it?

[CornedBee]

ClientToScreen is a WinAPI function wrapped up by MFC's CWnd and probably by VCL's TWnd (or whatever) too.
The original version is passed a POINT *, I guess TPoint is derived from POINT just like CPoint, so TPoint * should work.

What do you mean it goes out of the screen?

[purusingh]

if the initial position of window starts in (0,0) of desktop screen
then while clipcursor(&rect) mouse draggs within the windows if it displaces again the mouse graggs from (0,0) of the desktop to length of window.

so how to convert the coordinates?

[CornedBee]

Can you rephrase that? I don't understand.

[purusingh]

Rect=GetClientRect();
ClientToScreen(TPoint(Rect.left,Rect.top));
SetCapture();
ClipCursor(&Rect);

Above are the codes I have written.
when I run my program.if my window's top-left angle is conside with top-left of desktop that is Point(0,0) then it works ok but if not conside when I drag my mouse over my window it draw correctly on mywindow but the cursor goes out of my window.
The mouse pointer should be insided my window even if I tried to move out of my window.

[CornedBee]

TPoint(rect.left, rect.top)
creates a copy of those coordinates. It won't alter the original rect.

Actually I am surprised this is allowed at all. Logically the prototype of the function has to be
void TWnd::ClientToScreen(TPoint & pt);
but then you shouldn't be able to pass a TPoint object created on the fly to it. The only explanation I see is that the Borland compiler is worse than I thought.

[purusingh]

Do you have bc++5.I will put all my codes here so that you check it?
Thanks

[CornedBee]

I don't.